Electrical and thermal properties of carbon-nanotube composite for flexible electric heating-unit applications

  • Chu K
  • Kim D
  • Sohn Y
 et al. 
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Abstract

Highly conducting carbon nanotubes (CNTs)/polydimethylsiloxane (PDMS) composite with a low concentration (5.7 vol.%) has been shown to be applicable in a highly controllable electric heating element. Due to a high shear-processing technique for mixing CNTs into an uncured PDMS matrix, the CNT/PDMS composites have a fairly uniform dispersion and no agglomeration of CNTs. The percolation threshold of the prepared CNT/PDMS composite is achieved similar to 0.03 vol.%, which is one of the lowest values previously reported in the literature. The fabricated CNT/PDMS composites can be quickly heated from room temperature to 200 degrees C within 30 s by applying a DC voltage of 12 V. In addition, the CNT/PDMS composite show good thermal stability and repeatability during a long-term heating test. Our proposed CNT/PDMS composites could be used as a basis for light-weight and flexible heating-unit applications.

Author-supplied keywords

  • Carbon nanotube
  • electric heating
  • nanocomposite
  • polydimethylsiloxane (PDMS)

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